Luna-Resurs-1(OA) spacecraft high gain antenna drive mechanism

Purpose:

Rotates high gain antenna about two perpendicular axes

Qualification: Ground development tests completed

Performances:
Rotation angle range, °
±85
±75
Scan speed, °/s, no less
5
Output shaft rotation step, arcmin
2,5
Pointing error, arcmin, no more
±15
Self-braking torque (unpowered), N·m, no less
2
Torque achieved, N·m, no less
6
Operating temperature range, °C
–45 to +50
Life expectancy, °, no less
1 200 000
Mass, kg
7,4
Angle sensor
Rotary encoder, Error: ±10′ at ambient temp., ±15′ over extended temp. range